CentOS

Sometimes when you’re using a server, you’ll notice that the disk i/o is slower than it ought to be, or is using a lot more cpu than it should be during disk i/o. In some cases, this would be because the BIOS is configured to use your sata drives in legacy IDE mode instead of

Issues regarding software and hardware raid are no stranger to the IOFlood blog, with articles discussing the relative merits of each, articles discussing why raid is important (and so are backups), and so on. But RAID only provides protection against failed drives if you realize a drive has failed and replace it. Often times, a

We get this question a lot, about “Why is my Linux server using so much ram?”. In many cases, it really isn’t using much ram at all, but just to be sure we always have to check. At least half the time, really very little is being used, but the way that Linux reports ram

You may have a Centos dedicated server or VPS, and you’ve been assigned additional IP addresses, which have not been configured by your hosting provider. There are good reasons your host won’t have configured these for you, because if you are using virtualization, many VPS control panels need to manage these IPs, and so it

I’m a big fan of Centos, but like anything, it’s not perfect. In Centos 5, it is nearly impossible to get a working install onto drives larger than 2tb. In Centos 6, it is possible, but not entirely straightforward. The reason for the difficulty, is that MBR (master boot record) was designed only to support

A common problem you may experience is sluggish performance or disconnections from your Centos dedicated server, even though there is sufficient CPU, ram, disk i/o, etc. After some troubleshooting, you may come to believe you are being DDoS attacked, but you don’t see an unusual amount of traffic, and there’s no single IP or handful

Everyone knows it’s a good idea to keep backups, but it can be difficult to get them up and running, and even harder to keep them staying that way. On top of that, the backup process can make your server slow to a crawl if you have typical hard drives instead of SSDs. R1Soft is a

If you’ve had problems with the nic driver failing on x9 / x10 supermicro motherboards with the intel e1000e NIC, we have a fix for you. Centos 6 on X9 motherboards (x9scl / x9scm) seems to have the most problems, but other motherboards and OS’s are potentially affected as well. There are a lot of